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CBSE Class 10 Maths (Basic) 2025 · Paper 430/S/1 · Question 37

Arithmetic Progressions 4 marks Medium
In a charming village, there is a street called 'Maplewood Avenue', where the houses are numbered from to . A community group has decided to undertake a green renovation project, aiming to install solar panels on the houses. They have a few questions before they begin the project.
  1. (i)How many houses are there on 'Maplewood Avenue'?[1]
  2. (ii)The house numbers follow an Arithmetic Progression. What is the first term of the A.P. and the common difference?[1]
  3. (iii)(a)If the group wanted to calculate the sum of all house numbers from to , how much would that be?[2]
  4. (iii)(b)What is the sum of the house numbers between and ? (OR alternative to (iii)(a))[2]

Answer

(i) There are houses; (ii) First term , common difference ; (iii)(a) The sum of all house numbers from to is ; (iii)(b) The sum of the house numbers between and (houses to ) is .

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